These guy i don't know so well.......as i haven't fought against them much, and i don't use them........however it would be very good to get Stealth rocks onto your team as entry hazards are very good to have (Rapid Spinners are as well.....however unless you have Pokemon that need Spin Support, they aren't necessary, but a nice thing to still have around, don't forgot that a lot of the Meta game right now is very Weather Focused.........a lot of Rains are running rampant. Remember to be prepared for them. I will let some other people have the reins here now though, I don't want to dilate this with only my Ideas.....and suggestions. it is good to have diversity in opinions since we all play a bit differently (I like to play highly offensive, typically taking a lot of entry hazard support, I usually run 3 offensive Pokemon along side 3 Defensive ones so i have an Offensive and Defensive core to work with and have pivots for changes etc.....also run a lot of VoltTurn, to keep momentum in my favour lol). If you don't know some of those terms i would be glad to help you out lol.